Process of coining and dies therefor



P. E. BIRD.

PROCESS OF comma AND DIES THEREFOR.

APPLICATION FILED APR-8, 192].

Patented; Oct 31, 1922.

a, w 2 FA .7

7 Z X r Patented Uct. 31, 1922.

PETER E. BIRD, OF JENKINTOWN. PENNSYLVANIA, ASSIG-NOB TO AUTOMATIC MACHINERY 85 EQUIPMENT COMPANY, OF PHILADELPHIA, PENNSYL- VANIA, A CORPORATION OF DELAWARE.

PROCESS OF COINING AND DIES THEREFOR.

Application filed April 8,

To (ZZZ whom it may concern:

Be it known that I, PETER E. Bun). a citizen of the United States, residing in Jenkintown, Montgomery county, Pennsylvania,

have invented certain Improvements in a Process of coining and Dies Therefor, of which the following is a specification.

The object of my invention is to improve the process of coining by so designing dies that the coin can be cut from a blank. upset,

rceded and embossed in a single machine.

This object I attain in the following manner, reference being had to the accompanying drawings, in which:

Fig. 1 is a sectional view illustrating my improved cutting and coining dies, with the blank strip in position between the dies;

Figs. 2 and 3 are sectional views shoW- ing the different steps in the process of coining; and

Fig. at is a sectional perspective view or? one of the cutting dies, showing the means for forming the reeding on the edge of a coin.

In the drawings, the press and the mechanism for operating the dies have been omitted, as they form no part of the present invention.

1 and 2 are the two cutting dies. each having an annular cutting edge 3 and an opening 4 in which the coining dies 5 and 6 are located. The several dies are adapted to suitable guides and mechanism, of any suitable type, is provided to give the dies the necessary movements. The annular cutting edge 3 of each die 1 and 2 is greater in diameter than the coining dies and the inner face is slightly beveled, as shown, while the outer surface may be at any angle desired. The 4.0 object of making the cutting edge of greater diameter than the coining dies and beveling the inner surface, as at 9, is to upset the edge of the coin blank a, as at b, Fig. 2, when it is cut from the strip 0 by the movement of the cutting dies 1 and 2. This upsetting is necessary as it forms the annular rim on both faces of the coin. The coining dies have annular recesses 7 to receive the upset metal and to form the rim on the coin. The coin- 1921. Serial No. 459,796.

ing dies 5 and 6 are cut in any suitable manner, as at S, to emboss the faces of the coin.

In the cutting die 1. in the present instance, is a series of grooves 10, Fig. i, which are formed partly in the beveled inner surface 9 of the die and partly in the wall of the opening a, extending sufliciently within the die to shape the metal of the blank as the blank is forced into position in the cutting die 1, Fig. 3. at which point the blank is compressed and coined by the movement of one or both coining dies 5 and 6, after, which the blank is forced out of the cutting die 1 as the dies separate, as in Fig. 1, allowing the coins to drop away from the dies, when the blank strip 0 is moved forward and the operation is repeated.

It will be seen that by the above process, the coin blank is cut away from the strip and its edge is upset, and, as it is moved into coining position. the edge is reeded and then the impression is made by the coining dies on the obverse and reverse sides of the coin, one of the cutting dies acting as a collar. These steps in the process are produced by simple movements of the dies located in a single press.

While I have described the reeding of the coin simultaneously with the movements of the dies, in some instances, the inner surface of the die 1 may be plain and the reedo ing may be accomplished in another machine.

I claim:

1. The process of making coins, said process consisting in simultaneously cutting a blank from a strip and upsetting the edge 5 of the blank and then. embossing the blank between coining dies.

2. The process of making coins, said process consisting in simultaneously cutting a blank from a strip and upsetting the edge of the blank, then moving the blank into one of the cutting dies and reading the edge of the blank as it is moved into position, then embossing the blank between two coining dies.

3. The combination of two cutting dies, each having an annular cutting edge of the same diameter to cut a blank from a strip; a

cutting dies and the inner surface of the 10 cutting; dies back of the edge being beveled so that, when the coin blank is out, its edge Will be upset; and a series of longitudinal grooves in the Wall of the opening in one of the cutting dies so that, when the blank is 15 forced into cutting position, reeding Will be formed. on its edge.

PETER E. BIRD. 

